Vulcanizer for pneumatic tubes



Feb. 22 1927.

` R. M. BRUNDIDGE VULCANIZER FOR PNEUMATIC TUBES 'Filed -June es, 1926 Patented Feb. 22, 1927.

ROBERT M. BBUDIDGEpOF CLEBUIRN, TEXAS.

YULCANIZEB FORPNEUMATIG TUBES..

Applicatioi mea June 2s, 1926. serial No. 118,951.

This invention relates to improvements in tube holders and vulcanizers for mending automobile tubes and has for its object to provide a simply arranged and economically 6 constructed device of this character.

Another object of the invention is to provide an electrically operated tube holder and mender whereinthe heat is supplied by electric current in the vulcanizing operation.

With the above and other and further minor, yet important objects, -in view the invention `will be better understood from a perusal of the following detailed description in connection with the accompanying l drawings forming part hereof and in which- Figure 1 is a top plan view of the tube holder and mender and illustrating a por` tion of a pneumatic tube i`n operable posi? tion thereon.

Figure 2 is a longitudinal sectional view along the line 2-2 of Figure 1.

Figure 3 is a cross-sectional view line 3--3 of Figure 1; and

along such radius as to conformably receive ade- .fiated tube 2 which is to lie fiat upon the plate 1 when.being repaired. The late 1 is of such width as to easily receive t e tube 2. .Usually such patches or repairs to be made to the tube are not of any great width",

or size, hence the plate is ofsuch 'dimensions as will not make it inconvenient or bulky.

Secured to opposite ends 3 of the plate 1 and at right angles thereto are strips 4 fastened thereto by screws 5 or in any preferred manner. Adjacent the strips and on the opposite side of the plate l are transversely arranged grooves 6. These grooves and strips are for the purpose of holding the tube in place 'when' repairs are being made by vulcanization,.the tube beingforced into the grooves by 'clamps comprising "rods 5 7. These `rods two in number have an opening in one end 8 and the opposite end 9 'is forked. In Figure 3 it willbe seen thatv the ends of the strips 4 are curved into a circle at 10 and into thesecurved portions is placed T members 11. When the rods 7 are placed over the T members 11, butterfly nuts 11V are screwed down thereupon. This causes the tube to be depressed into the grooves` and the tube is held in place. When thus arranged the tube is ready for vulcanization.

For vulcanizing the tube there is provided a metallic plate 12 of such curvature as to be conformably received and seated upon the tube. Arranged within the plate 12 is an electrical resistance coil-12a of common type which 'receives heat by means of the wires from an electric source of power. The

wires are connected to the posts 13.

From the foregoingit will be understood that the device provides a simple and effectual means for vulcanizing a tube of this nature. It should be understood that modifications may be made in the arrangement and construction of the invention in keeping with the appended claims.

What is claimed is:

1. A vulcanzing device for pneumatic tubes comprising a semi-circular lower plate and a semi-circular upper plate, said lower plate including transverse grooves at either end thereof; a strip at each end of saidlower plate below said grooves, a T-sha ed elementfswingably connected to each en of said strips, a nut on each T-shaped member, a rod for each of said grooves and clamp means for compressing each rod in said grooves to holdvthe rods in said grooves when the vulcanization is made.

2. A vulcanizing device asset out in claim 1, and wherein said upper'plate includes an electric resistance coil, said upper plate conformably receivable upon the lower plate,

the tube being compressed between the plates during the vulcanization thereof; said up.

per plate being independently disposed with respect .to the lower plate. Y

In testimony whereof I ax`my's1gnature.,

' ROBERT M. BRUnnIoGE. 

